+37084 THAT is an EXPRESSION....not anything I can do with that.
When you add an EQUAL sign it becomes an EQUAtion (get it?)
3x+9 + y = 7 is an EQUAtion WITH two variables x and y.
to solve equations , you have to have an equation for each VARIABLE.....two equations, two variables......or you can SOLVE for ONE of the variables...but you cannot get a numerical value for the variable
example
solve 3x+9 + y =7 for 'y' that means : Manipulate the given equation until you have y= on one side
3x+9+y=7 Subtract 3x from both sides of the equation (this still makes it EQUAL)
3x-3x +9 + y = 7-3x
9+y = 7 - 3x (because...well 3x-3x is zero)
Now subtract '9' from both sides
9 - 9 + y = 7-3x - 9
y=7-3x-9
y=-2-3x and you have solved the equation FOR 'y' in TERMS of 'x''.....
Can't do much with what you have given us......got more info?
